Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dabfc3f85a462d…

MALICIOUS

PDF

49.8 KB Created: 2021-09-11 21:35:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9f021a87c173809b7465f01c8329faca SHA-1: ce61c5a3b792aef41c945b4e7f5fb3cec4fd574d SHA-256: 30dabfc3f85a462d13a84ec744e06feda0857885598f790b8080127e9050b970
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous URLs pointing to potentially compromised WordPress upload directories and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body was unreadable, but the heuristics and URLs suggest a deceptive redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8419

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://isitekmuhendislik.com/userfiles/file/71991677760.pdf In PDF document text
    • https://em.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/54618322937.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/mezonegimavivegoku.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/e50fd3b1a5bf82f0026b26063fb54ac9/9141804548.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/mazebewesanobivesaxewokut.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/763841101.pdfIn PDF document text
    • http://koala-al.com/d/files/nilirekatafeludaxeduro.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/gikebexeju.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f605b8f7f3---burokafiwev.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/85607711516.pdfIn PDF document text
    • http://ore-processing.ru/d/files/86535083494.pdfIn PDF document text
    • http://kahsport.cz/userfiles/file/10305039574.pdfIn PDF document text
    • http://biomax.shop/filespath/files/20210903033055.pdfIn PDF document text
    • https://eguiders.com/uploads/22725759111.pdfIn PDF document text
    • http://caythuocnam.org/images/files/muvuvojitosudibitu.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/e2f15ca8575589d1caa142defc7a9551/48673195361.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/161340eda55f79---lagurexagowol.pdfIn PDF document text
    • https://bisleri.genefied.co/ckfinder/userfiles/files/vewiluzowopatulumozusij.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/52495656798.pdfIn PDF document text
    • http://www.520amis.com/upload/files/94050759125.pdfIn PDF document text
    • http://wenyanchem.com/upload/files/wotadiwenik.pdfIn PDF document text
    • https://visualarchive.bg/files/rozurakuvivovepuxux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=wonder+park+ytsPDF link annotation

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